V1) Leave everything, as it is
We have clear rules for TN teams.
If it turns out that we have more TN teams this year, than we used to have, so be it.

V2a) Play only 4 matches per round
It was like this in the first NC.

V2b) Play only 4 matches per round and give small teams more flexibility
We can't force nations with only 4 players to build a team, as there can well be reasons why somebody cannot play in a certain week or two.
But if we allow teams with only 4 players to play matches ahead of schedule, we could.
Example: One of my players cannot play on the days scheduled for clash#3. I PM the captain of our clash #3 opponent (and TD), telling him, that I have a player who cannot play in week#3, his available times before that are a,b,c. Team of clash#3 picks a player who is available at one of the suggested times, this match takes place earlier and is considered slot#1.

V3a) Players may be in lineup twice for small teams
We stay with 5 matches/week.
Teams with less than 6 members are allowed to line up the same player in 2 slots.
BUT - nobody may be in lineup twice a 2nd time, before all team members have been in lineup twice once. (So you cannot have your best player play twice all the time, you have to balance it)

V3b) Players may be in lineup twice for all teams
Every team is allowed to use that option as they like it, even if they would have enough players available (so a team could normally play with 5 different players, but against their strongest opponent or in the Final they can turn up with their 2 best players twice)

V4) Do it, as the Olympics do
Each country is allowed to have 1(!) team.
If your country needs you (= doesn't have a complete team yet) you have to play for your country.
If you don't make it to your own country's national team (or don't want to be there for whatever reason and they don't need you) you are free to play for any other country that doesn't have enough players.
The right to pick the national team goes to the captain of this country's best placed team in last NC (or the one with best ELO at a given time?).

Example how it would work:
Kostas has to play for Greece (unless 6 other Greek players show up who don't want him on their team )
If another Greek player wants to play, he has to join Kostas for Greece.
Kasi has the right to pick the German team. He does so, and doesn't pick Mudda (maybe Mudda didn't ask to be picked, either ). If Mudda wants to play, he can then ask Kostas and join the Greek team.

If you think that's completely crazy, envisage the many Chinese looking table tennis players at the Olympics, playing for various countries ...

Would that mean, that consolidated teams from the past years are torn apart? Not really, as there are many countries with maybe just 1 player. You're not the national team but want to stay together? Then take your complete team, and run after Mr Bean to play for Ireland, after Olle Boll to play for Sweden, after GSV to play for Belgium, find a Canadien, ...

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Maybe we should have a board vote on these variants (and any others, that somebody comes up with)?